Electronic pen



FIG. 1 is a top-front-left perspective view of a representative embodiment of an electronic pen according to my new design;

FIG. 2 is a bottom-rear-right perspective view thereof;

FIG. 3 is front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof, wherein the right side elevational view is a mirror image of the right left side elevational view;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a partial left side elevational view of a portion of the electronic pen indicated in FIG. 5. 

CLAIM The ornamental design for an electronic pen, as shown and described. 